Steam-turbine-driven locomotive



H. BOLTSHAUSER.

STEAM TURBINE DRIVEN LOCOMOTIVE. APPLICATION FILED Nov. 6, 1920.

- 1,401,308, Patented Dec. 27,1921.

nznnmron BOLTBHAUSEB, or zuaron, smrznanmn.

STEAM-TURBINE-DBIVEN LOCOMOTIVE.

Specification 0! Letters Patent.

Patented Dec. 27, 1921.

A ucaaonmed November 6, 1920. Serial no. 422,247.

To all whom it may concern:

Be it known that I HEINRICH BoL'rsmusna, a citizen of the l lepublic of Switzerland, residing at Zurich, Hardturmstrasse 19, Switzerland, have invented certain new and useful Improvements in Steam-Turbine- Driven Locomotives; and I do hereby declare the following to be a clear, full, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, referencebeing had to the accompanying drawing and to letters or figures of reference marked thereon, which form a part of this specification.

The invention relates to improvements in locomotives which are driven by steam turbines through the interposition of spur-gear- 1n i ccording to the invention the steam turbine together with the spur-gearing is mounted on a casting forming a frame and the unit thus formed is fixed to the locomotive frame. .The frame may be made of cast steel. When the steam turbine is working with double reduction gear one of the reduction gears may be arranged within and the other without the locomotive frame. With a locomotive built in this way the turbine together with the reduction gear may be erected on its frame in the workshops, it can be tested and then, if necessity arises, be transported as a complete unit or set of machinery to another far off workshop in order to be fitted to the locomotive frame. Such a complete set can be kept as spare part and can be exchanged for a first set in a very short time, in case the first set has been damaged.

An exemplification of the invention is shown on the accompanying drawing, in

which Figure 1 represents a front view of a locomotive in whlch a steam turbine fitted with a double reduction gear is mounted on a cast steel frame the latter together with the ar being fitted to the mild steel frame of t e locomotive in the front part of the latter, being a partial section on line A-B,

ig. 2 illustrates a plan view of the turbine, the reduction gear and part of the locomotive frame.

To the elongated .shaft 2 of the steamturbine 1 a pinion 3 is secured which is in engagement with the large gear wheel 4.

The latter is mounted on the intermediate shaft 5. Another pinion 6 rigidly fixed to the intermediate shaft 5 transmits the power to a ear wheel 7 fitted to the lay shaft 8 provide with the main cranks 16. The elon gated part of the turbine shaft is mounted in bearings 9 and 10 and the intermediate shaft 5 in bearings 11 and 12. The steamturbine 1 and the bearings 9-12 are supported by a common cast steel frame 13. Fig. 1 shows said frame in a vertical section along A--B of Fig. 2 in which the bearings 11 and 12 are illustrated in section. The-cast-steel frame 13 is of the box section type and is constructed as light as possible yet providing for sufficient resistance. The turbine 1 and the reduction gearings 3 i and 6-7 can be definitely erected on the frame 13 in the workshops, they can be alined very accurately and tested with regard to smooth running. Then this whole set of machinery is built into the locomotive frame of which the two lateral walls 15 are shown in a vertical section in Fig. 1. As is shown in the drawing the first pair of gear wheels 3-4 is arranged within the locomotive frame 15 and the second pair of wheels 67 Without said frame so that the wall 15 of the frame can be of uniform crosssection.

It will be seen that the casting 13 carries the entire driving mechanism, turbine, gearing, lay shaft and cranks, together with the necessary casings, so that this mechanism may be installed as an entire unit, and is readily and quickly removable in case an exchange becomes necessary, without having to separately remove the casings, gears, turbine, &c., it being simply necessary to remove fastening bolts between the frame 13 and the locomotive frame and disconnect the pipe connections to the turbine.

I claim:

1. In a steam-turbine driven locomotive, the combination of a steam-turbine, reduction gears, aframe for mounting said steamturbine and said reduction gears, and a locomotive frame to which the aforementioned parts are fitted as a single exchangeable unit.

2. In a steam-turbine driven locomotive the combination of a steam-turbine, reduction gears, a cast steel frame on which said steam-turbine and said reduction gears are mounted and forming to other one set of machinery, and a locomotive frame to which said set is exchangeably fitted.

10 locomotive frame.

l. An excl angealide driving unit tor turbine driven locomotives, comprising a frame arranged to be secured in the locomotive frame, a: turbine, reduction gearing and lay shaft and cranks pertaining thereto mounted in said frame and removable therewith.

In testimony that I claim the foregoing as my invention, 1 have signed my name.

HEINRIZH BOLTSHAUSER. 

